Method of and machine for making paper bags



Oct. 7 1924. 1,511,043

J. M. SULLIVAN METHOD 0F AND MACHINE .FORIVIAKING PAPER BAGS Filed July 2e, 1922/v 1o sheets-sheet 1 v Oct. 7, .1924. 1,511,043

J. M. SULLIVAN METHOD 0F AND MACHINE FOR MAKING PAPER BAGS l0k Sheets-Sheet 2 Filed July ze, 1922 oct. 7, 1924. 1,511,043 J.. M. SULLIVAN METHOD OF AND MACHINE FOR MAKING PAPER BAGS Filed July 2e, 192.2 1o sheets-sheet J. M. SULLIVAN METHOD OF AND MACHINE FOR MAKING PAPER BAGS Filed July 26, 1922 v 10 Sheets-Sheet 5 FIG-I6 oct. 7, 1924. 1,511,043`

J. M. sULllvAN METHOD OF AND MACHINE FOR MAKING PAPER vBAGS Filed July 26. 19:22.' 1o she'et'sf-sheet 6 7 t O.I w l .n l Hh As B O ml P. A P G mw. NM@ WM. [R6 L02 LF UEy l STNLU .HJ C

d i n WF A F O D O H mi E M Oct. 7 1924 Ucir.I 7 1924. 1,511,043

J. M. sULLlvAN METHOD OF AND MACHINE FOR MAKING PAPER BAGS Filed July 26, 1922 10 Sheets-Sheet 8 ,0g r-lcaafi 6 m I f/f FIG'EB ma F'IG29 l l @@Mm MAW Oct. 7 1924.

J. M. SULLIVAN METHOD OF AND MACHINE FOR MAKING PAPER BAGS lO Sheets-Sheet 'A9 Filed July 26, 1922 Pisa?, ,24,

l l l Oct. 7 1924.

J. M. SULLIVAN METHOD OF AND MACHINE FOR MAKING PAPER BAGS Filed July 26, 1932 10 Shee-ts-Sheet l0 panying Patented 0st. 7, 1924.

3 H5. SULLIVAN, 0F CHCGO, ILLINOIS.

-' 11 on or .ann r. ron NG rarnn Bacs.

Application led July $26, 1922. Serial No. 577,495.

To all 'whom t may comes-n:

Be it known that l, .hams M. SULLIVAN, a citizen of the United States, residing at Chicago, in the county of Cook and State of illlinois, have invented a certain new and useful Method of and e' for Making Paper Bags, of which the follow-ing is a specification. l

The invention pertains to the manufacture of paper bags, and has for its general aim the production of a nove method and machine for completely forming the bags from a continuous sheet of paper, and discharging them in connected end to end relation in which they may be conveniently dispensed simply by severing the bags one at a time from the strip or chain as they are used.

It has heretofore the practice in the manufacture of paper bags, to arrange them, when the final pasting operation has been completed, in bundles or stacks of al predetermined number each in which formthey are supplied to the user.

This manner of supplying paper bags for use has resulted ina great waste, due to the fact that the bags are frequently stacked while the paste is still wet sothat they have a tendency to stick together making it diicult for the user to selectv only one bag from the stack. Consequently the clerks in retail establishments, frequently, in their haste to fill orders, extract two bags instead ofone, one of which falls to the ioor and is trampled under foot, eventually being swept out and totally wasted.

The primary object of my invention is to make the bags in such a. way as to eliminate such waste and at the same time render it possible to select and extract a, bag for use, more easily and hence more rapidly.

A further object of the invention is to provide a machine of a relatively simple character whereb the bag making operatlon may be complete degree of efficiency, the operation being rapid and wholly automatic, and entirely without waste.'

The objects of the invention thus generally stated, together with other and ancillary adv vantages are attained by the construction 'and arrangement illustrated in the accomdrawings forming part hereof where-in I have illustrated one form of machine only. It is contemplated, however,

y performed with a high that various changes in -the form, 'construction and arrangement of the partsmay be made by those skilled inthe art without departing from the spiritl and scope of the invention as expressed in the appended claims.

Figure. 1 of the drawing is a fragmentary side elevation of a machine embodying my invention. Fig. 2 is a top plan view of the v same. Fig. 2a is a fragmentary perspectivel View illustrating the manner of forming the bottom of the bag. Fig. 3 is a fragmentary perspective view of a portion of the strip of paper from which the bag is to be formed after the initial operation has been performed thereon. Fig 4 is a similar vieuT illustrating the manner in whichv the sheet is folded in the second operation 'wherein the bellows folds are formed for the opposite end walls of the bag. Figs. 5, 6, 7 and 8 are fragmentaryperspective views illustrating the mannerv of forming the bottom of the bag. Fig. 9 is a fragmentary longitu dinal sectional view taken in the plane of line 9 of Fig. 2 but on an enlarged scalo. and illustrating the first and second opera tions upon the sheet' shown in Figs. 3 and4. Fig. 10 is a fragmentary transverse sectional view taken in the plane of line 10-10 of Fig. 9. Fig. 11 is a fragmentary end view of the machine. Fig. 12 is a vertical sectional view and Fig. 13 a fragmentary elevational view, illustrating the rolls through which the sheet is initially passed tovscore the same as shown in Fig. 3. Figs. 14 and 15 are res ctively fragmentary lvertical sectional a elevational views of the means for performing the third operation illustrated in Fig. 5, Fig 14 being taken substantially in the plane of line 14 of Fig. 2. Fig. 16 is a fragmentary vertical longitudinal 'sectional view taken substantially in the plane'of line. 16-16 of Fig. 2 illustrating the means for performing the operation shown in Fig. 6. Fig. 17 is a fragmentary vertical transverse sectional view taken substantially in the plane of line 17 of Fig. 2 and illustrating a means for applying ad#` hesive to the strip.. Fig. 18 is a fragmentary transverse sectional view taken in the plane of line 18 of Fig. 17. Fig. 19 is a vertical sectional view taken in the plane ofline 19 of Fig. 17 Fig. '20 is a similar view'taken in the plane of line 20--20 of Fig. 17. Fig. 21 is a fragmentary detail view through one of the adhesive applying devices, taken in the plane of line 21 of-F ig. 17. Fig. 22 is a transverse sectional .view taken in the plane of line 22-22 of Fig. 16. The means shown in 'Figs 17 to 21 inclusive, serve to apply adhesive as shown Ain broken lines in Fig. 5. Fig. 23 is a fragmentary longitudinalsectional view taken in the plane of line 23-23 ofFig. 2 and showing the means for folding the strip into tubular form as shown in` Fig.'6.` Fig. 24 is a fragmentary plan view of this means. Figs. 25 and 26 are fragmentary transverse sectional views taken in the 'plane of lines 25 and 26 respectively of Fig. 23. Fig. 27j is' a fragmentary longitudinal sectional view taken in the plane of line 27-27 vof Fig.Y 2 and showinga means for performing a cutting and folding operation preliminary to the final operation. Figs. 28 and 29 are respec-k tively sectional and'elevational views of the cutting means referred to in connection with Fig. l27. 'Fig 30`is a sectional detail view of the folding means referred to in connection with Fig. 27. 'Fig 31 is a sectional view taken in thel plane of line 31 of Fig'. 2 and illustrating the means for performingr the final folding and pasting operation (Fig. 8). Fig. 32 is an enlarged sectional detail view of this means. Fig. 33 is a sectional view taken in the plane of line 33-33 of Fig. 31.- Fig. 34 lis a fragmentary plan view of a portion of the strip in flat form to illustrate the various operations peri formed thereon. Fig. 35 is a sectional view through the bottom of one bag andthe top of a connected `bag after the same has been com leted. 'Fig 36 is a sectional view taken in t e plane of line 36 of Fig. 2 Vand illustrating a final scoring operation. Fig. 37 is a fragmentary plan view of the scoring means shown in Fig. `36. Fig. 38 is a'perspective view illustrating the manner in which said vscoring means act to cause the v l: bagff to assume a stacked forni. Fig. 39 is a 'fragmentary perspective view of a modified form of scoring device. 'Fig 40 is a fragmentary plan view ofthe tubular strip after the same has been scored. Fig. 41 is a fra entary erspective view of the strip score by the evice shown in Fig. 39 4 The operationof forming a'bag` includes the initial scoring of the sheet in the manner illustrated in Fig.- 3v to form a pair of spaced triangular creases or scores a and a transverse score bin vthe Vsheet A. (Figs. 12

` and 13); form bellows folds c 1n parallel spaced relation (Figs. 9 to 11); cutting a IHap d' Figs. 5, 14-and 15); folding back the Hap (Fig. 16) ;.ap lying adhesive to the sheet upon. thelunerside thereof as shown at e and f ('Figs. 5 and 17 to 21 inclu.s1ve)p`; folding the sheet into a tubular strip igs.'6 and 23 to 26 inclusive); cutting from the tubular strip alap g (Figs.

reino-aa 7 and 27 to 30); so as to form the upper open end of one bag; applying adhesive i and foldingv the flaps d and g back upon the strip to form the bottom of the adjacent bag (Figs. 7, 8 and 32 to 35, inclusive), and finally scoring the tubular strip (Figs. 36 to 4l) to cause the bags to assume a stacked relation while remaining connected.

Referring now to Figs. 1, 2, 9, 12 and 13, theA strip or sheet A is fed from a suitable source of supply, such as a roll B mounted upon suitable standards 36, and passes first beneath a roll 37 and then between the latter and a roll 38 which are suitably journaled at their opposite ends in side frame members 39 of. the machine. These rolls (Figs. 12 and 13) perform the initial scoring` operation illustrated in Fig. 3 at a and b to facilitate the formation of thetriangular portions a1, a2 in the operation offorming the bottom of the bag (Figs. 2a and 34) as hereinafter more fully described. 'lo this end they comprise suitably shaped forming means. vThus the roll 37 is provided with a pair of triangular plates 40 mounted upon the periphery of the roll in spaced longitudinal relation and secured in position by means of screws 41 between filler platesv 42. A' bar 43 extending longitudinally of the upper roll 38 constitutes the means for forming the transverse score b. -The roll 38 is'provided with rubber blocks 44 opposite the plates l40 and similarly held in place between filler plates 45; and the roll 37 has a longitudinal rubber stri 46 opposite the bar 43. The latter is adjust-- ably secured in position inthe roll by set screws 47. These scores are formed as will hereinafter more fully appear, for the purpose of facilitating the formation of the bottomL of the bag into flat form in per* pendicular relation to the side and end walls thereof.

From the rolls 37 and 38 the sheet passes upwardly and rearwardly over a table 48 ig. 9) and from thence into the means for forming the bellows folds c (Figs. 9 to 11). This means comprises a central apron 49 having vertical side walls 50 between which and-#upright plates 51 are formed grooves 52. llnto these latter the paper is guided by ,means'of blades 53 carried by a transverse bridge member 54 suitably supported in the framework'of the machine. The folding blades 53 are made of substantial length, ex-

tending forwardly to a point between a pair one longitudinal edge a scoring bar 58 for forming a transverse score d at the base of the flap. At its opposite edge the block has a serrated cutting edge 59, and at the opposite ends of the plate are shearing blades 60 adapted to coact with similar blades 61 mounted in the roll 56 at the opposite end of a block 62. Grooves 63 and 64- are provided at opposite longitudinal edges of the plate 62 for receiving respectively the scoring bar 58 and the cutting edge 59. 65 designatesv circumferential grooves for receiving the blades 60. For receiving the bellows folds c the lower roll 56 is provided with deep peripheral grooves 66. The rear ends of the blades 53 also enter these grooves 66 as shown in Fig. 14. Obviously the blocks 57 and 62 may be secured in position in any suitable way as by means of screws 67 and 68 and the cutting blade 59 is shown as secured in position b set screws 69. The roll 56 is herein made o a diameter twice the size of the roll 55 to accommodate the grooves 66, and therefore the roll 56 is equipped with two cutting blocks 62 and associated parts.

Referring now -to Figs. 16 and 22, the flap d which has just been formed is now folded back- (Fig. 6) in order not to interfere with the progress of the strip through the succeeding mechanisms. The means for accomplishing this result comprises simply a pair of air nozzles 70 to which air is supplied under pressure by way of a pipe 71, from a suitable source of supply (not shown). These nozzles 70 are spaced apart transversely of the sheet and as the flap d passes thereover it is elevated and swung upwardly. Thereupon it is immediately passed between a pair of plates '72 and 73 by which it is creased reversely and folded back flat upon the sheet as shown in said Fig. 6.

Upon emerging from between the plates 72 and 73 the sheet passes between adhesive applying mechanism wherein a continuous layer of adhesive e is applied to the underside of the sheet at one edge thereof and spots f of adhesive are applied to the oppo-l site outer sides of the bellows folds e. The means herein em loyed for this purpose comprises (Figs. 1 to 21 inclusive) a plain upper roll 74 and a built-up lower roll 75 to which adhesive is supplied by means of a plurality of disks 76 operating in a pan of adhesive substance (noty shown). The roll may comprise an intermediate cylindrical section 77 fast upon a shaft 78 and slotted in its opposite end walls as at 79 to form radial guideways for a pair of carrier plates 80. At each end of the intermediate section 77 are end sections 81 also fast upon the shaft 78 and having end walls adjacent the opposite ends of the intermediate section which are slotted as at 82to form radial gudeways for the opposite ends of the carrier plates 80. The latter have mounted upon their outer edges a plurality of pins 83 having at their freel ends rubber adhesive-carrying fingers 84 which are adapted to engage respectively with the disks 76 in the rotation of the rollers 75. At one end of said roller, I provide a ring 85 carried by one end section 81 and having continuous contact with one of the disks 76. The latter are mounted upon a shaft 86 suitably supported on the framework and connected by gears 87 and 88 to the shaft 78 for rotation thereby.

Rotation is imparted to the roll 75 from the shaft 78, and simultaneously radial movement is transmitted to the carrier plates 80 through the medium of eccentric circular grooves 89 in which trunnions 90 at the opposite ends of the plates operate. Said grooves 89 are formed in the inner faces of stationary heads 91 rigid with the framework, and it will be apparent that as the roll is rotated the eccentric location of these grooves will cause the carrier plates and hence the fingers 84 to move radially, the arrangement being such that when the fingers are in their lowermost position they are extended downwardly intocontact with the disks 76 and when in their uppermost position in the roll they are approximately flush with the periphery thereof. This insures that an excessive amount of adhesive will not be appliedvto the sheet A. Between the sections of /the roll l provide radial slots or grooves 92 for receiving the bellows folds c, said grooves being extendedv i into the carrier plates 80 as at 93./

As in the case of the rolls 55 and 56, the roll 75 is twice the size of the roll 74 and hence is provided with two diametrically opposite sets of adhesive applying devices 83-84; and the arrangement is such that the ngers 84 will apply adhesive to spots f and the ring 85 will apply a continuous strip of adhesive to one longitudinal edge of the sheet as at e (Fig. 34).

Upon the application of the adhesive to the sheet, it is folded into a flat tubular strip A', with the bellows folds forming opposite end walls of -the tube. The means (Figs. 23 to 26) employed for this purpose. K

comprises a plate 94 supported by vertical standards 95 (Fig. 25) which latter are' provided with vert-ical grooves 96 for receiving the bellows folds c of the strip. Forwardly of the standards 95 provide a pair of laterally adjustable guide members 97 one at each side edge of the sheet. which are shaped to be engaged by the folds c in their forward travel. as well as by the opposite edges of the sheet, so as to turn said folds inwardly and the edges downwardly and inwardly, the latter occupying an overlapping relation (Fig. 6). In the .idf-'- eontinued movent of the strip it downwardly and forwardly tuh bent ngers 98 carried by a plate 98, f. thence around a roll 99 and upwardly to the means for cutting the bottom Hap in a manner to be prtly described.

As shown in Fig. the plate 94: is provided near opposite edges with a pair of grooves 100 and 101 so arraned as to be disposed opposite the longitu nal stri e of adhesive and the spots f thereof and t us avoid the deposit of adhesive upon the sur- Y pair of rolls '102 and 103 having devices for cutting the tube to complete the formation of the upper open end of one bag and .to enable the sealing of the bottom of the ad]a -cent bag. 'lo'this end the upper roll 102 carries a block 1011 having at its opposite ends a pair of blades 105 and at one longitudinaledge a serrated cutting edge 106. The'roll 103 has a block 107 therein provvidin at its opposite ends cutting blades 108 adapted to coact with the blades 105, and .at one longitudinal edge with a blade 109 adapted' to entera groove 110 adjacent the block 10d to form a transverse score i in the f. i sheet, suitable grooves being provided in the i peripheries of the rolls for the purpose of accommodating the blades 105,106 and 108.

' The'dap g which is'thus formed 'is cut .through the side wall of the tubular :strip Aoppositethe wallcontaining the flap al, and

includes portions of the bellows folds c; but it is made of a width somewhat less than the wid-th of the fla-p al sothat one side wall of each bag at its upper, end is made of a lengthslightly less than the other Wallto facilitate the opening of the bag. Both of the flaps d and g are of a length somewhat less than1 the Width `of the tubular strip yso that links y' are formed atopposite edges thereof serving to connect the bags in end to end relation. l

From the rolls 102 and 103 the strip passes between plates 111 and 112 for the purpose of turning the flap d forwardly over the flap g. To this end the plate 112 is vshaped to provide an enlargement at its .forward end in which is formed a chamber 113 above the surface of the bag. Air under 'pressure is supplied to said chamber through a passage 114 communicating with a suitable source of air supply and discharging byway of a'jet 115 into the rear end of the chamber. The jet 115 is arranged adjacent the upper surface of the sheet, and it will be obvious that the premura of the air will turn the flap d forwardly, holding it and the dap g in a forwardly and upwardly inclined position. 'lhe rear wall of the chember 113 is inclined downwardly and forwardly so that as the sheet passes from the ehber, the Hap d engag with said inclined wall is forced downwardly asv illustrated in Fig. 30. The daps are then positively forced downwardly dat upon the sheet by the rear ends of the plates 111 and 112 which at this point are spaced apart just suciently to provide a passage for the sheet.'

From the rear ends of the plates 111 and 112 the strip is operated upon to fasten the daps d and g to one ofthe side walls there- 4of to form the bottom of the bag. ln this C operation it passes rst between rollers 110 and 117 (Figs. 31 to 33) carrying mechanism for applying a quantity of adhesive to the under side of the sheet, transversely thereof, and for folding the aps downwardly, and finally between pressure exertin means to render the adhesive edectual. e adhesive-applyin means is mounted in the lower roll 117, w 'ch consists of stationary end pieces 118 rigid with the framework. A drum 119 fast upon a rotating shaft 121 is radiall slotted to receive diametrically opposite lades 122. rlhese blades are provided with roller trunnions 123 at each side edge operating in camgrooves 124 in the inner faces ofthe end pieces 118.

The arrangement is such that inA their lowermost position the blades contact with a roll 125 mounted upon a. rotating shaft 126 and ersed at its lower edge in a bathiofadhesive 127 pand when the blades approach their uppermost vposition their outer edges lie approximately .Hush with the riphery of the drum 119 in which position the bladesy contact the under side of the sheet passing between the ro-lls 116 and 117', and deposit a quantity of adl hesive upon the sheet in aosition such as to be covered by the end of t e Hap d, as indicated at (Fig. 34). 120 indicates a wiper blade for the roll 125.

The means for turning the Haps d and g downwardly lconsists of a linger 128 mounted in the roller 116 so as to project radially therefrom, a recess 129 being provided inl the periphery of the roll 117 to receive this .ngen The latter is preferably formed of rubber, upon a block 130 inserted in a suitable slot in the roll 116 and held in place by a filler block 131. Onewall of 'ico the recess 129 has a plate 132 thereon with f will retainv their downward position as the sheet .emerges from between the rolls. In order that the rubber linger 128 may not grip the paper, it is preferably faced with a metallic strip 134.

The next operation is that of forcing the {laps-rearwardly and upwardly into engagement with the underside of the tubular strip, which it will be remembered has been coated with a transverse coat of adhesive h, and thus to complete the bag. This means comprises simply a pair of plates 135 and 136 spaced apart vertically so as to receive between them the tubular strip, the forward ends of the lates being cut away at their adjacent sur aces as at 137 soy as to insure the passage therebetween of the flaps bent back upon the strip.

From between the plates 135 and 136 the strip passes between rollers 138 and 139 whereby the final sealing of the bottom of the bag by the adhesive is effected under pressure.

It will, of course, be understood that the various rolls may be mounted in the framework of the machine in any suitable or preferred manner and that power may be applied thereto to effect their rotation in the proper direction and at the desired speed through the medium of gearing such as is commonly employed in machines of this character. Herein the rolls 37 and 38, 55 and 5c, 74 and 75, 102 and 103, 116 and 117 and 138 and 139, between which the sheet or strip passes are relatively mounted so that a yielding pressure is exerted upon the sheet through the medium of springs 140 acting upon the bearing boxes for the upper rolls. Power is applied by means of a pulley 141 fast upon a shaft 142 and driving a spur gear 143. The latter meshes with a gear 144 which is rigid with a gear 145 connected in a chain of gears l146 with which the rolls are operatively associated. The rolls 37 and 38 are driven by means of a chain and sprocket mechanism 147 from said chain of gears 146.

It will be understood that the machine operates continuously as the sheet A is fed into the same, so that it is in fact operating simultaneously upon a` plurality of bags, which are discharged from the machine in rapid succession but in chain form, that is, in connected end to end relation by the links y' (Fig. 38).

Summary of operation: In order that the bags when thus discharged from between the rolls 138 and 139 shall automatically assume a stacked relation, I provide a roll 148 coacting with the roll 139 to deflect the strip downwardly, these rolls being provided with scoring devices to cause` the bags to fall one on top of the other to produce a stack.

Referring to Figs. 36 to 38, these scoring devices consist of a metallic bar 149 one in each of the rolls 139 and 148 and opposed rubber strips 1502 the bars and strips being suitably secured 1n' position by filler lblocks 151 and 152. Preferably the arrangement 1s such that in the passage of the tubular strip between the rolls 139 and 148 transverse scores c are formed in the connecting links j, but'it will be understood that this score may be otherwise located if desired. Obviously, since the successive scoring operations are performed by the bars 149 in opposite rolls, the strip is scored first in one ldirection and then in the other so as to cause the bags to fall in opposite directions one upon the other while remaining connected together. In this form, the bags may be conveniently placed in a dispensing device (not shown).

By the use of the scoring device 153 shown in Fig. 39 a perforated score lc (Fig. 41) is produced which increases the facility with which the bags may be severed one from the other.

Referring now to Fig. 34, I have shown the sheet in unfolded or fiat form after all of the operations have been performed thereon. Initially the sheet passes between the rollers 37 and 38 wherein the triangular scores o; and the transverse score b arc formed. Next it passes over the apron 49 and portions upon each side of its renter are guided by means of blades 53 into grooves 52 upon each side of the apron to form the bellows folds c. These folds are indicated by three broken lines in said Figure 34 and it will be observed that the bottom of the fold (the central line) coincides with the apex of one of the triangular scores a, the portion of the sheet forming the folds being of a width equal to the base of the triangle formed by the score a. These folds c, as in the case of former'bags, constitute opposite end walls of the bag, and the triangular portions defined bythe scores a become a part of the bottom ofthe bag as will presently more fully appear. y

In the continued passage of the sheet through the machine the flaps d are cut by means carried by the rollers 55vand 56, and in passing between the plates 72 and 73 said flap is folded back upon the sheet for convenient passage through succeeding operations. Adhesve is now applied to the sheet through the medium of the lingers 84 carried by the roll 75, along one edge of the sheet upon the underside thereof, as indicated at e and also at spots f.

The next operation is that of folding the i. finger 128, forced downwardlyt .n v openin provided in the cutting "operation, 25.

'is made of alength such that it includes the major portions ofthe bellows foldsfc, but leaves atl the outer edges;'thereof lportions foi-min partsof the` connectingi links j J(lFig. ie other part .fof each link `is formed by portions leftl in the operation oi? cutting.. thelapd.` .l l

'From the rollers 102 and'rlgthetubular strip passes betweenthe plates 112 and.Y 111 into the air chamber'113z wherein Y thejap d is moved rearwardly (lFig.v andfthence the strip passes betweenthe rolls :1l6and117 and the apsdfandi g arejengafedjbythe rough the anda `esive is applied by' `bladesrl2 2 in the form ofa transverse lstrip'or coat la rear#v the strip. 'llheV latterinow passes. between" plates 134: and, r'135, bending the' yHapsgupand vnally the fstrip 'paSSe'S .o between; presf surev rolls 138 'and 139?-andfbetweenl the lat# ter roll. and the roll' 148 by Whiclifitisfgiven sitev sides of the tubular strip, andthe perf;

a Adovvnvf/'ard' direction and is" opp('isitely scored as at la in of the bags.

the latter is open, is defined-by the score b (Fig. 34) and is formed b end yportions b b2 and a a2, the portions and?)2 being, formed respectively integral with theoppo,

.A tions a and a2 beingintegral With the. oppof site end .Walls ofthe vstrip; The' portions b ando2 are secured together by lthe aps d and q folded back and pasted to thelunl 1 derside vof the strip, and the-triangular portionsv a. are tucked or vfolded vinwardly so as Yt o`foverlie thev portions b"- aiid' b2,- when the latter assume a atfform, as permitted by the portionstithelatter being made fast to the portions b. :and b2v b" adhesive. applied at l For a moreeomp eteunder-- the construction' of the `bag itself, reterence. is made to my prior Patent No; 1,279,171, dated September'17, 1918.

rEhe machine which l have produced for making the bag is relativelyv simple in construction and ed'ectual in operation." `Not only does it form the tubular portion of the' bag but operates entirely automatically to complete the bag, yforming the bottomV thereof as Well. By reason of thevfact that j they are connected togetherl in end to end relation the form of a chain theyllend (Fig. 40) to insure the stackp osite wall; and means forr applying ,f normas themselves readily to economical and the cornetion of the bag is such that the vmay be ily opened.

v believe that li am the rst to have made h paper tbags from a tubular strip by pro- 1n order or sequence'or that any par-l ticular order or sequence Q is intended to be speci'edgfor -While li have shown one yembodiment'in "vsfhich a definite sequence of op-v ".erationsobtains, it will 'obvious that numerous -f possible variations will occur to those skilledin the art.

claim vas myinvention: a'

1. pa' er bag machine having, oomf einem, .means foffoiaiagars'hat into a A p g-lattubularstrip,means providing an openwardly of thegiiapv but on' :the'underside .of

fing in onewvallof `the strip,nand `means for fo ding .ai .previously formed ap in the p v i otherfvvall 'ofthe strip through said opening. Wardly and vrearwardly along-the .s'corale','fa'25Av machine for making bags of paper or other suitable material havin means for v .Y 'j for foldingthe dep through theopening. he bottom of the bag (Fig.v 2a) kwhen, l

3, A paperbag machine having, in combinationkmeans forscori'ng a sheet, folding means andtlap cutting means, said means being arranged` to operate in some predeter- .minedsequence to provide a tubular. strip 'Y vhavingja @dap in. one wall and an o ening inganoppositewall; and means forl .olding said Hap through said opening and intoen vgafgement with said opposite iside Wall.-

d; yA--pa ler bag machine` having, in combination, olding means and .cuttinglmeans arranged to operate in some predetermined sequence upon a sheet toprovide va tubular strip having a Hap in one wall and an opening in an opposite wall wherebyl saidv ilap maybe passed through `said opening and 'secured to the opposite Wall.

' 5; A paper bag machine having,.in .combination, folding means and cuttm lmeans arranged lto operate in a predetermined sequence to' provide a tubular strip having a Hapi'n one Wall and an 'opening in an ghesive to the sheet whereby. when the same is folded into a strip the opposite edges of 'thesheet are secured together.

6. A 'paper bag machine havin in combination, means for folding a s eet, and yd-ap cutting means, said means vbeing Vary lll@ lllfi ranged to operate in a predetermined sequence to provide a tubular strip having a flap in one wall; and means operating to force the flap through the opening formed thereby and secure it to the opposite wall of the strip.

7. A paper bag machine having, in combination, means for folding a sheet, and flap cutting means, said means being arranged to operate in a predetermined sequence to provide a tubular strip having a flap in one wall; and means for securing said flap to the opposite wall of the strip including means operable to form an opening in said opposite wall in register with the opening formed by said flap, and means for forcin said flap through said opening whereby t e flap may be secured to the opposite wall.

8. In a paper bag machine the combination of means for feeding a continuous sheet including a pair of rolls having scoring means thereon, means forming a pair of spaced folds in the sheet, a pair of rolls having means for forming a flap in the sheet centrally thereof, said flap being formed to swing on a line transversely of the sheet, means folding the sheet into a tubular strip, vmeans forming a second flap of a width less than the first mentioned Hap and swingable on a line coinciding with that of the irst mentioned flap, and means for turning the flaps back upon the strip.

9. A paper bag machine having means for scoring a sheet to provide a transverse score and a pair of triangular scores adjacent the transverse score, folding means and cutting means arranged to operate in a predetermined sequence to form a tubular strip with opposed bellows-folds and having a flap in one wall and an opening in 'an opposite wall through which the flap` is adapted to be passed, and means for fastening the flap to the opposite wall.

10. A paper bag machine having, in combination, folding means and cutting means operable in a predetermined sequenced to provide a tubular strip `having opposite bellows-folds and a flap in one wall of the strip of a length less than the width of said wall, and means for fastening the Hap to an opposite wall of the strip.

11. A paper bag machine having,in combination, folding means and cutting means arranged to operate in a predetermined sequence to provide a tubular strip having a flap in one wall and an alined opening in the o posite wall, and means for tucking the ap through said opening, said flap being of a length less than the Width of the wall in which it is formed.

12. A paper bag machine having means for feedin a continuous strip of paper,

' rollers having means forscoring the sheet transversel thereof, an apron over which the sheet 1s arranged to pass and having grooves at opposite sides thereof, blades in said grooves for folding the sheet to form `spaced parallel folds therein, means engaging the opposite side edges of the sheet and forming it into a tubular strip, and means operating at some time during the operation to provide flaps in the opposite side walls of the strip for securing them together and thereby forming the bottom of the bag.

13. A paper bag machine having a pair of rolls between which a sheet of paper is arranged to pass, and means carried by Said rolls for spring the sheet includinnr devices arranged in spaced relation ongitudinally of the roll so as to produce a pair of laterally spaced angular scores in the sheet, and a scoring bar located in the opposite roll so as to produce a transverse score at the bases of the angular scores.

14. A paper bag machine having a pair of rolls between which a sheet of paper is arranged to pass, said rolls having means forming a flap therein including a plate extending longitudinally of one of said rolls, cutting blades at the opposite ends of the plate and along one longitudinal edge thereof, and a scoring blade along the opposite longitudinal edge of the plate.

15. A bag machine having a pair of rolls between which a sheet of paper is arranged to pass, one of said rolls having upon its periphery al pair of longitudinally spaced cutting blades and a pair of circumferentially spaced cutting and scoring blades, and the other one of said rolls having a pair of spaced blades adapted to coact with the blades of the first mentioned roll, and grooves for receiving the cutting and scorlng1 bars and blades of the first mentioned rol.

16. A paper bag machine having means for scoring a sheet transversely thereof, folding means and cutting means operable to provide a tubular strip having a flap in one wall hinged along a line parallel to said transverse score and spaced therefrom a distance of one-half the width of the bottom wall to be formed.

17 A paper bag machine having a pair of rolls between which a sheet of paper is arranged to pass, means cutting a flap in the lsheet hinged to swing on a transverse line, and means for folding the flap back upon the sheet including a pair of spaced guide plates, and means independent of the cutting means for lifting the flap prior to its passage between said plates.

18. A paper bag machine having a pair of rolls between which a sheet of paper is arranged to pass, means cutting a flap in the sheet hinged to swing on a transverse line, means for folding the flap back upon lll@ the sheet including a pair of spaced guide having bellows-folds in opposite end Walls,

a transverse liap in one side Wall thereof near said transverse score, and an alined opening in the opposite side Wall through Which said flap is adapted to be passed and secured in posltion upon said opposite wall by adhesive applied by said adhesive applying means.

20. A paper bag machine having a pair of rolls between which a sheet of paper is arranged to pass, said sheet having a pair of spaced parallel folds therein, one of said rolls having grooves for receiving said folds, and means for applying adhesive to one 'surface of the sheet comprising a blade having adhesive applying lingers thereon. movable from an extended relation in Contact with adhesive supplying means into a retractedadhesive-applying position.

21. A paper bag machine having, in combination, scoring means, folding means and cutting means, the several means being arranged to operate in a predetermined sequence to provide laterally spaced triangular scores in the sheet With longitudinal folds alined with the apices of said triangular scores and thev sheet formed into a tubular strip to provide opposed side Walls, the longitudinalffolds providing opposed end walls, said cutting means roviding a pair of flaps in the opposite sidiJ walls swingable on a transverse line approximately touching the apices of said triangular scores and adapted to be secured together to form the bottom of the bag.

22. A paper bag machine havin means operating upon a sheet to produce ellovvsfolds, means for forming said sheet into a tube, means opearting at some time for cutting Haps in the sheet atropposite sides ofT said tube, and means for folding one of said liaps through the opening formed by the other flap.' f y 23. A paper bag machine having, in combination, folding means and cutting means arranged to operate in a predetermined sequence to lprovidea tubular strip having a Hap in one Wall and an opening in an opposite Wall, and means for tucking said ap through said opening, the operation of forming said flap and said opening `servingalso to produce the open endof an adjacent bag.

24. A paper bag machine having, in combination, folding means and cutting means and operable to provide a tubular strip having' Haps 1n opposed Walls With the openings formed by the flaps in alinement, one of said aps being of greater width than the other, and means for folding the flaps into engagement with one side wall of the strip, the Hap gf greatest Width being folded over the other 25. A paper bag machine having folding means, cutting means and pasting means, operable in a predetermined order to produce a tubular strip having opposed end Walls in the form of bellows-folds and a pair of transverse flaps in opposite side Walls swingable substantially on the ksame axis, said pasting means operating to apply adhesive so as to secure the extreme lower ends of the bellows-folds to the adjoinin side Walls of the strip and to secure sai Haps together.

26. A paper lbag machine having folding means and flap cutting means operable in a predetermined sequence to produce a tubular strip having a flap in one Wall, said cuttin means including a pair of rolls, cutting bla es carried by one of said rolls for severing one side edge at opposite ends of the flap, and a bar carried by the other rollfor scoring the flap along its opposite side edge to form a hinge therefor.

27. A paper bag machine having a pair of rolls between which a sheet of aper is arranged to pass, said sheet having a pair of spaced parallel folds therein one of said rolls having rooves for receiving said folds, and means to one side of the sheet near one edge there of comprisingy an adhesive applyingvring on one of said rolls having continuous contact with the paper.

28; A paper bag machine having means forming a lflap in a sheet to swing Von an axis transversely thereof, means folding the sheet into a tubular strip, and means forming al second flap in the strip in the oping formed by thefirst'iap.

29. A paper 'bag machine having foldingl and-cutting means operable upon a sheet to produce a tubular strip having! a Hap in one wall-'thereof and. an alined opening in the opposite Wall, means for tucking the flapv through the opening .formed thereby through the opening in the opposite Wall, and means for folding the Hap against said opposite Wall ofthe strip,V

30. A bag machine having means forming a flap in a sheet, means turning said flap back upon the sheet, means ,folding the sheet into a tubular strip, and means forming a second Hap in the strip through the` opening formedl ini themaking of t e lirst flap. 31. Albag machine having means forming a Hap 1n a sheet, means turning said inc v or applyingadhesive lli) V.posite side Wall thereof through the open- Viinivvv i vio flap back upon the sheet, means folding the sheet into a tubular strip, means forming a second fla in the strip through the osening formed in the makin of the first. ap, means for returning the rst flap to its initial position, and means for folding both flaps against one wall of the strip and securing them thereto.

32. A bag machine having means for forming a iiap in a tubular strip transversely thereof including a pair of rolls, cutting blades carried by one of said rolls for severing one side edge and opposite ends of the Hap, and a bar carried by the other roll for scoring the'ap along its opposite side edge to form a hinge therefor.

33. A bag machine having means forming a flap transversely of a tubular strip, a pair of rolls, means for guiding the strlp between said rolls including means for holding the flap in its initial position, and means for forcing the flap through the opening formed thereby and securing it to one side wall of the strip to form the bottom of the bam x34. A bag machine having, in combination, folding means and cutting means operable to form a tubular strip having a transverse Hap in one side wall and an alined opening in the opposite wall, of means for folding and securin said iap against said opposite wall inclu in a pair of rolls, a transverse ngerl carrie by one of said rolls, and a recess in the other one of said rolls for receiving said finger.

35. A bag machine having, in combination, folding means and cutting means operable to form a tubular strip having a transverse ap in one side wall and an alined opening in the opposite wall, of means for folding and securing said flap against said opposite wall inclu in a pair o rolls, a transverse finger carriedg by one of said rolls, and a recess in the other one of said rolls for receiving said nger, one wall of said recess havin a plate therein arranged to be engaged the finger to form a score at the base of? the flap.

36. A bag machine having, in combination with folding means and cutting means operable to form a tubular strip having a transverse flap in one side wall, of the alined opening in the opposite wall, of means for vfolding and securing said ap against said opposite wall including a pair of rolls, a transverse finger carried by one of said rolls, and a recess in the other oneof said rolls for receiving said nger, means for applying adhesive to the strip adjacent the Hap, and means for folding the a against the stri into contact with the a eslve.

3 A machine for forming bags comprising scoring means, folding means and Hapcutting means, said several means operating in a predetermined sequence to provide a tubular strip with opposite bellows-folds a transverse score and a-pair of triangular scores having their bases coinciding with said transverse score, and a pair of iaps in opposite side walls of the strip hinged on axes spaced from but parallel to said trans- Averse score; adhesive applying means, and

means for folding -sai flaps throu h the openings formed thereby, one of sai flaps passing also through the opening formed by the other iap and into engagement with the opposite side Wall of the strip and into oontact with adhesive applied by said adhesive applying means.

38. A machine for making paper bags in connected end to end relation comprising, in combination, folding means and cutting means operating to forma tubular strip having a flap in one wall thereof and an alined opening 1n the opposite wall thereof whereby to form simultaneously the open end of one bag in the operation of forming the bottom of an adjacent bag, said iiap 'and opening being of a length less than the width of the strip, and means for folding said fla through said opening into engagement with the opposite side wall.

39. A machine for making paper bags in connected end to end relation comprising, in combination, folding means and cutting means operating to form a tubular stri having opposed bellows-folds and a flap 1n one wall thereof and an alined opening in the opposite wall thereof whereby to form simultaneously the open end of one bag in the operation of forming the bottom of an adjacent bag, and means for folding said flap through said opening into engagement with the opposite side wall, said flap and said opening being of a length less than the width of the strip whereby to form connecting links between adjacent bags at the opposite ed es of the strlp.

40. machine for making paper bags in connected end to end relation comprising, in combination, folding means and cutting means operating to form a tubular strip having a flap in one wall thereof and an alined opening in the opposite wall thereof whereby to form simultaneously the open end of one bag in the operation of forming the bottom of an adjacent bag, means for folding said fla through said opening into engagement with the opposite side wall, said Bap and said opening being of a length less than the width of the strip whereby to form connecting links between adjacent bags at the opposite edges of the strip, and means for scoring said links transversely thereof.

41. 4A machine for making paper bags in connected end to end relation comprising, in combination, folding means and cutting means operating to form a tubular strip having a iap in one wall thereof and an alined opening in the opposite wall thereof whereby to forni simultaneously the open end of one bag in the operation offorming the bottom of an adjacent bag, means for folding said Hap through said opening into engagement with the opposite side well, said Hap and said opening being of e. length less than the width of the strip whereby to form connecting links between adjacent bags at the opposite edges of the strip, and means for scoring said links transversely thereof alt/ernetely in opposite directions to ed'ect the staclnn of the bags one upon the other.

42. 'lhe methodof marking a aper bag which consists in cutting e ep su stantially centrally of a sheet, folding the sheet into e 'tubular strip with said dep in one side Well thereofyforming e second de through the opening made in cutting the 'rst dep, folding both aps against the side Well of the strip op site that containing the rst ilap, and na 1y securing the deps in position.

4-3. The method of making e, paper bag which comprises folding and cutting a sheet to produce a tubular strip having e. lap in one Wall and an alined opening in the opposite Wall, folding said Hap through seid opening, and securing the Hap to the opposite Wall as by Ineens of adhesive.

44:. rllhe method of making e peper beg which consists in folding and cutting e sheet to produce a det tubular strip having opn ieinoee posed bellows-folds and opposed side Wells with e lap in one Well end en elined openB ing in the other wall through which seid flap may pass, tucking said hap through the epenin end securing the dap in'position upon t e opposite side well as by means of adhesive.

d5. The method of making e paper beg `which comprises scoring, folding and cutting e sheet in a prearranged se uence of operations to produce e tubular strip herring opposite bellows-folds constituting end Walls, end side Wells having .alined o e'nings therein with a Hap hinged at one e ge of each of seid openings, and estening the deps together es by adhesive.

d6. 'llhe method of making peper begs Which comprises folding end cutting operen tions occurring in e predetered sequence to produce e tubular strip haring opposed side Wells with alined openings therein of e length less then the width of the strip Whereby to form connecting links at the opposite ends of the strip, end forming the bottom oi? the bag by meens of e den hinged et one edge of one of seid openings end folded through the other opening into engagement with the opposite side Welh ln testimony whereof, ll here hereunto af uned my signeture.

JAMES ML SULLEVAN 

